have the mouth of a sailor(redirected from having the mouth of a sailor)
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have the mouth of a sailor
To have a tendency or proclivity to use coarse, rude, or vulgar language. I don't know what you're letting your son watch on television, but, for a fifth grader, he sure has the mouth of a sailor! My grandmother is the sweetest old lady you'll ever know, but, my lord, does she have the mouth of a sailor!